Well point



lullin/111143 51.1.25( III WELL POINT T. F. MOORE Filed NOV. 24. 1925 Jan. 3l, 1928.

ihr s sS.

UNITED STATES 4 1,657,684 PATENT OFFICE.

THOMAS F. MOORE, 0F MORRIS PLAINS, NEW JERSEY.

WELL POINT.

Application eld November 24, 1925. Serial No. 71,148.

This invention relates to certain improvements in well-points of the class set forth in my Patent No. 1,570,697, Jan. 26, 1926, and allowed under date of Jul 6, 1925, and my pending application erial No. 59,318, filed September 29, 1925, for removing seepage water from trenches and other excavations or depressions as may be required for the laying of sewer pipes, water mains and other. sub-way conduits or for the erection of foundations for various superstructures.

These devices are adapted to be inserted i in the water-saturated soil usually in a previously prepared hole therein in the vicinity of the proposed excavation or other work, and connected to a suction pump or equivalent means for withdrawing the water from the soil without liability of clogging any of the working parts by silt, sand, gravel or other solid material.

The specific object of the present invention is to provide a device of this character with a relatively larger filtering area in proportion to its size than has heretofore been practicable.

In other words, I have sought to produce an easily portable well-point of minimum practical cross section area with a relatively lar e filtering area and at the same time to maintain a relatively large capacity for the filtered water entering the suction pipe and thereby to greatly expedite the work of removing the water from the soil;

Other objects and uses relating to specific parts of the device will be brought out in the following description.

In the drawings Figure 1 is an outer face viewl of a wellpoint embodying the various features of the invention.

Fio'ure 2 is an enlarved longitudinal verb b b tical sectional view, partly broken away, of the saine device.

Figure 3 is an enlarged transverse sectional view taken on line 3 3, Figure 1.

Figures 4 and 5 are enlarged horizontal sectional views, taken respectively in the plane of lines 4.--4 Fig. 2 and 5 5, Figure 3.

As illustrated, this device comprises a metal pipe -1- of any suitable length and diameter, and a bar -2- preferably of wood applied to the periphery of the pipe and extending lengthwise the major portion of the length thereof, and a ,pair of angle irons 3 extending from end to end secured to opposite lengthwise sides of the bar --2'- with their corners resting against the periphery of the pile as shown in Figure 3, said angle irons eing also extended alon the pipe the major portion of the lengt scribed.

The lower end or head iof the wellpoint is similar to that set forth in my pendinor application Serial N o. 59,318, above identitled, and is secured to the lower end of the pipe -l-. The two anges as -3- of the angle irons -3- abutting against opposite lengthwise sides of the-bar -2- extend outwardly from the periphery of the pipe -1- in substantially parallel planes and some distance beyond the outer face of the bar -2- thereby forming a lengthwise groove or recess for receiving the ends of a filtering screen -5- and a suitable fastening strip -6-- of metal or equivalent material.

The other flanges as -3- of the angle irons -3- extend outwardly in opposite directions from the periphery of the pipe -1- at substantially right angles to a medial line passing through the longitudinal centers of the pipe -1- and bar -2- and are therefore disposed in the same plane at right angles to said medial line and extend laterally some distance beyond the diameter of the pipe to form separate wings or stays for the adjacent portions of the filtering screen -5-.

ThisV screen extends approximately the full length of the angle irons -3-, and has its intermediate portion wrapped around the outer face of the pipe -1- opposite the bar -2- and across the outer edges of the flanges -3- and -3- of the angle irons 3- and have their longitudinal edges secured in overlapping relation to the outer face of the bar 2- by means of the clamping strip '-6- which `also extends the fulll length of the screen -5-- and bar/ 2- and is held in place by screws -7-, the bar -2--` being secured to and between the adjacent flanges -3- of the angle irons -3- by rivets or bolts -8-, Figure 3.

The bar -2, and angle irons -3 applied to opposite faces thereof are therefore madeup as a single unit or frame to `be applied to the periphery of the pipe in the manner described for receiving and supporting the screen -5-.

This screen is preferably composed of an thereof for a purpose presently deinner layer of copper wire fabric of relatively fine mesh, and an outer layer of galvanized wire of relatively coarse mesh for protecting the copper screen against undue wear or injury without seriously retarding the free flow of water therethrough and when wrapped around the pipe -1- and outer edges of the ianges -3 and 3- of the angle irons 3- forms a pluralit of, in this instance, four lengthwise cham ers -9- and -9- of substantially triangular cross section for receiving the water which filters from the soil through the screen.

The lower end of the pipe -1-' is threaded and secured in a threaded aperture 10- in the u per end of the section -4- thereby iirmly iolding the pipe -1- and section -4- in fixed relation.

The bar 2-, angle irons -3-, screen 5 and clamping bar --6 are firmly held against endwlse movement relatively to the pipe between the upper end of the section -4- and a clamping collar or head 1lwhich latter is adjustable endwise of and upon the pipe -1- and is held in operative position by a set screw -12-, Figure 2.

The upper end of the section -4- and lower end of the head -llare provided respectively with reduced annular flanges 13- and 14- around which the adjacent ends of the screen -5- are wra ped, portions of said flanges, registering wit 1 the lengthwise bars 2- an 6 and overlapping edges of the screen 5 and thereby to facilitatethe assembly and removal of the bar -2- and screen -5-.

The upper end of the section 4- and lower end of the section -11- are rovided with laterally extending integra bosses -15- and -16- registering with the space between the angle irons -3-, said bosses being provided with sockets -15- and --l6- respectivel for receiving the adjacent ends of the ar -6- and thereby to assist in holding the bar and screen in operative position.

The section -4- is similar to that shown in my pendinor application Serial No. 59,318, previously reiperred to, in that it consists of a hollow cast metal shell having vertically spaced horizontal partitions --17-- and -17- provided respectively with vertical ports -18- and -18- which are controlled by float valves -19- and --19-.

The portion of the shell 4- above the partition -17- is divided by a transverse vertical partition -20- into separate compartments or chambers -21- and -22-, the chamber 22 being connected by a bypass -23- around the partition 17- with the valve chamber containing the valve d -6-, being cut away to receive the adjacent ends of the bar The upper end ofthe passage 22- is connected directly to and forms a continuation of the pipe -1- and therefore the pipe -1- is in direct communication with th9 valve chamber containing the valve The chamber 21- communicates at its upper end through a passage Q4- with the chambers -9- and -9- to allow the water which may ep through the filtering screen at any level throughout the length thereof to pass downwardly into the chamber -21- and, when the valve 19- is opened, into the chamber containing said valve from which it may be drawn upwardly through the passage 23- into the pipe 1- by any suitable suction device connected to the upper end of said pipe.

A rib 25- on one side of the valve chamber for the valve -19- prevents said valve from closing the passage 23- when opened by suction and also assures its closing against its seat when water under pressure is forced downwardly through the pipe -1- and passage -23- and thence through the port -18- and nozzle as -4- of the shell 4.

Similar ribs -26- project inwardly from the side walls of the nozzle -4- some distance below the normally closed valve -19 to prevent closing of the nozzle and to assure the re-seating of the valve when suction is applied to the upper end of the pipe --1-.

The upper end of the shell -4- and lower end of the ca section -11- are of suflicient size and s ape to close the open ends of the chambers -9- and -9- and also form abutments -27- for the adjacent ends of the angle irons but it will be observed that the flanges 13 and 14 extend toward each other beyond the corresponding ends of the angle irons and screen to permit said screen to extend nearly the full length of the angle irons and to be wrapped around said flanges to cooperate with the shell -4- and cap section l1- in forming the chambers -9- and -9- as shown in Figure 4.

Operation.

In the use of the device its lower end may be inserted in the soil, and, in some instances, where the surface soil is sandy more or less water under pressure may be forced through the pipe downwardly thereby closing the valve -19- and opening the valve -l9- to permit the passage of the water under pressure through the nozzle -4- and into the soil for making or enlarging the hole sufiicient to permit further insertion of the device into the soil until the screened portion thereof is brought to the level of the water to be removed.

As soon as the screened portion of the device is broughtto the proper depth for permitting the seepage of the water through the screen and into the chambers 9- and -9- suction may be applied to the upper end of the pipe by any suitable form of suction pump thereby closing the valve -19- and opening the valve 19 to rmit the water accumulating in the cham rs -21 and chambers 9- and -9- to be drawn downwardly rst 'through the port 18- and thence through the passage -23- outwardly through the -pipe -1- to the pump where it may be discharged to any place remote from the work under construction.

It will be noted that by assembling the angle irons -3- upon the supporting bar as 2 and applying said bar and angle irons to the periphery of the ipe -1- and then wrapping one or` more ayers of wire screen around the assembly forms relatively large filtering area and also rela-tively large chambers for the water passing through t e screens without materially enlarging the cross sectional area of the device as a whole and producing a more symmetrical well point which is better adapted for service for the purposes to which it is applied in addition to the added strength and durability ail'orded by the parts of the device assembled in the manner described, all of which are distinct advances in the art.

It will also be noted that the chambers -9 and -9-- and the opening through the pipe -1- constitute a series of len v wise water passages arranged symmetrically about the axis of the nozzle -4- and that this axis approximates the center of gravit of the entire well-point per se which ai s in balancing the device in a vertical position and assists in maintaining its perpendicular position as it is urged into the soil.

What I claim is:

l. A well-point of the character described comprising a pipe, opposed angle irons having their corners abutting against the periphery of the pipe, and a screen extendinoacross the outer edges of the angle irons an across a portion of the periphery of the pipe to form a plurality of lengthwlse chambers.

2. A Well-point of the character described comprising a pipe, a frame having lengthwise flanges extending outwardly from the lperiphery of the pipe in circumferentially spaced relation and forming with said pipe opposite lengthwise channels, and a. screen extending across the outer edges of the flanges and across a portion of the periphery of the pipe to form the outer walls of said channels.

, 3. A well-point of the character described comprising a pipe, a bar extending lengthwise of the pipe, angle irons secured to opposite sides of the bar and having their co1'- ners abutting against the periphery of the pipe, and a screen extending across the outer edges of the flanges of the angle irons andalso across a portion of the periphery of the pipe and secured to said bar. y

4. A well-point of the character described com rising a pipe, a hollow section secured to t e lower end of the pipe, angle irons arranged with their corners abutting against the periphery of the pipe and their lower ends abutting against the upper end of the hollow section. said angle lrons being extended upwardly some distance from the hollow section, a collar section secured to the pipe and abutting against the upper ends of the angle irons, and a screen wra ped around the outer edges of the flanges ol) the angle irons and agalnst the periphery of the pipe between said hollow section and collar section.

5. A well-point of the character described comprising a pipe, a frame applied to the periphery of the pipe and provided with outwardly projecting flanges, means on the pipe at op, site ends of the frame for holding said' rame in operative position and a screen extending across the vouter edges of said flanges and across a portion of the periphery of the pipe.

6. A well-point of the character described comprising a pipe, a hollow section secured to the lower end of the pipe, angle irons extending lengthwise of the pipe and having their corners abutting against the periphery thereof and their lower ends seated on the upper end of the hollow section, a collar section secured to the pipe and embracing the upper ends of the angle irons, and a screen wrapped around the outer edgesl of the angle irons and a portion of the periphery of the pi and extending from the upper end of t e hollow section to the lower end of the collar section.

7. A well-point of the character described comprising a pipe, a bar extending lengthwise of the pipe and of less width than the diameter of the ipe, angle irons secured to opposite sides o the bar and having their corners abutting against the adjacent portion of the pipe, a screen extended across the outer edges of the angle irons and across a portion of the periphery of the pipe and having its edges secured to the outer face of said bar between the angle irons.

8. An attachment for well-point pipes comprising a bar and angle irons secured to opposite sides of the bar with their corners projecting inwardly `from the inner face of the bar for engaging the periphery of the pipe.

9. An attachment for well-point pipes comprising a pipe, angle irons arranged cornerwise against the pipe and a screen wrapped around the pipe and angle irons.

10. An attachment for well-point pipes comprising a pipe, angle irons having their j'v corners engaging the pipe in circumferentially spaced relation, and ascreen wrapped around the outer face and edges of the pipe and angle irons.

5 11. In a Well-point of the character dethe pipe and frame and having portions 10 thereof registering with the recess, and a clamping strip secured in the recess of said frame and against the adjacent portions of the screen for holding the latter 1n place.

In witness whereof I have hereunto Set )5 my hand this 17th day of November, 1925.

THOMAS F. MOORE. 

